Know your Weingarten Rights
If a supervisor or other management/Labor Relations/Employee Relations/ Human Resources/Security representative requests an investigatory meeting with you and if you have a reasonable cause to believe that such a meeting may result in disciplinary action, including a warning, you have the right to request Union representation.
You should take the following actions before a meeting with management.
1. Request Union representation.
2. Remain silent until the Union representative is present.
3. Request the right to consult with the Union representative prior to meeting with management.
These rights came from a U.S. Supreme Court decision in 1975 generally known as Weingarten Rights.